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Finding the Fourth Proportional to 774.01, 1,160.81 and 226.25

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Solution

The fourth proportional to 774.01, 1,160.81 and 226.25 is: 339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.01 : 1,160.81 = 226.25 : x
  2. Step 2: Convert to fraction form
    774.01/1,160.81 = 226.25/x
  3. Step 3: Cross multiply
    774.01x = 1,160.81 × 226.25
  4. Step 4: Simplify right side
    774.01x = 262,633.26
  5. Step 5: Solve for x
    x = 262,633.26/774.01
  6. Step 6: Final answer
    x = 339.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.